After returning from his trip through time, Koyomi returns home and after he returning Mayoi's backpack, they come across a mysterious being that starts chasing them down. The two manage to escape when they meet Yotsugi who flies away with them to safety. After stealing a kiss from Koyomi to repay for her help, Yotsugi flees, leaving Koyomi at the mercy of a furious Shinobu that appears soon after and to calm her down, Koyomi kisses her too. With Mayoi still uncounscious from their predicament, Koyomi inquires Shinobu about the "darkness" entity they saw and she claims that she had seen it before during a trip to Japan 400 years before. She also claims that it will cause the destruction of the entire city if nothing is done about it.
忍とのタイムスリップから帰ってきた暦。北白蛇神社から八九寺真宵とともに家に帰り彼女にリュックサックを返す。しかし、その直後に二人は正体不明の『くらやみ』に襲われる。
가방을 돌려주기 위해 집으로 향하는 아라라기와 하치쿠지.
평소처럼 사이좋게 싸우던 둘은 뭔가 불길한 존재가 다가오는 것을 눈치챈다.
보이지 않는 존재로부터 도망치기 위해 아라라기는 있는 힘껏 페달을 밟지만...
从与忍的时光穿越之行回来的历。从北白蛇神社与八九寺真宵一起回家，交还她的包包。可是，两人随後遭到不明原因的「黑暗」袭击
Après être revenu de son voyage dans le temps, Koyomi rentre chez lui et rencontre Mayoi qui retourne enfin son sac. Ils croisent soudainement un être mystérieux qui commence à les pourchasser.
Koyomi dopo aver fatto ritorno dal suo viaggio nel tempo con Shinobu ed essersi imbattuto in Mayoi, Koyomi si dirige a casa sua per restituirle lo zaino. Tuttavia, subito dopo, i due vengono attaccati da una creatura composta da oscurità...
